package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundTo;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.to.SkuHasStockVo;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.dao.SpuInfoDao;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    SpuImagesService spuImagesService;

    @Autowired
    AttrService attrService;

    @Autowired
    ProductAttrValueService attrValueService;


    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;


    @Autowired
    CouponFeignService couponFeignService;


    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * // TODO 高级部分完善
     * @param vo
     */
    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        //1.保存SPU基本信息 pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
           // 除了要保存SpuSaveVo的基本信息，还需要额外保存SpuInfoEntity中的剩余信息createTime和updateTime;
           // 将vo礼拜呢的数据拷贝到infoEntity中
        BeanUtils.copyProperties(vo,infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(infoEntity);


        //2.保存Spu的描述图片 pms_spu_info_desc
           // 先从vo中拿到图片信息，然后保存到SpuInfoDescEntity中
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity=new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        descEntity.setDecript(String.join(",",decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);


        //3.保存Spu的图片集 pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(infoEntity.getId(),images);


        //4.保存Spu的规格参数 pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            valueEntity.setAttrId(attr.getAttrId());

            AttrEntity id = attrService.getById(attr.getAttrId());
            valueEntity.setAttrName(id.getAttrName());

            valueEntity.setAttrValue(attr.getAttrValues());
            valueEntity.setQuickShow(attr.getShowDesc());
            valueEntity.setSpuId(infoEntity.getId());

            return valueEntity;
        }).collect(Collectors.toList());
        attrValueService.saveProductAttr(collect);


        //5.保存Spu的积分信息 gulimall_sms（跨库）-》sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds, spuBoundTo);
        spuBoundTo.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if (r.getCode()!=0){
            log.error("远程保存spu积分信息失败");
        }



        //6.保存当前Spu对应的所有Sku信息：
           //6.1保存Sku的基本信息 pms_sku_info
        List<Skus> skus = vo.getSkus();
        if (skus!=null&&skus.size()>0){
            skus.forEach(item->{

                // 获取默认图片
                String defaultImg="";
                for (Images image: item.getImages()){
                    if (image.getDefaultImg()==1){
                        defaultImg=image.getImgUrl();
                    }
                }

                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item,skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());

                skuInfoEntity.setSkuDefaultImg(defaultImg);
                // 保存sku的基本信息
                skuInfoService.saveSkuInfo(skuInfoEntity);



                Long skuId=skuInfoEntity.getSkuId();
                //6.2保存Sku的图片信息 pms_spu_images
                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    skuImagesEntity.setImgUrl(img.getImgUrl());

                    return skuImagesEntity;
                }).filter(entity->{
                    // 返回true就是需要，false就是剔除
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());
                skuImagesService.saveBatch(imagesEntities);
                // TODO 没有图片路径的无须保存



                //6.3保存Sku的销售属性信息 pms_sku_sale_attr_value
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, attrValueEntity);
                    attrValueEntity.setSkuId(skuId);

                    return attrValueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);



                // 6.4保存Sku的优惠、满减等信息；gulimall_sms（跨库）-》sms_sku_ladder\sms_sku_full_reduction\sms_member_price\
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item,skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if (skuReductionTo.getFullCount()>0||skuReductionTo.getFullPrice().compareTo(new BigDecimal("0"))==1){
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if (r1.getCode()!=0){
                        log.error("远程保存sku优惠信息失败");
                    }
                }
            });
        }
    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity infoEntity) {
        this.baseMapper.insert(infoEntity);
    }

    @Override
    public PageUtils queryPageCondition(Map<String, Object> params) {
        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();

        /**
         *    key: '华为',//检索关键字
         *    catelogId: 6,//三级分类id
         *    brandId: 1,//品牌id
         *    status: 0,//商品状态
         */

        String key= (String) params.get("key");
        if (!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
               w.eq("id",key).or().like("spu_name",key);
            });
        }

        String status= (String) params.get("status");
        if (!StringUtils.isEmpty(status)){
            wrapper.eq("publish_status",status);
        }
        String brandId= (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId)){
            wrapper.eq("brand_id",brandId);
        }
        String catelogId= (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId)){
            wrapper.eq("catalog_id",catelogId);
        }


        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    /**
     * 商品上架
     * @param spuId
     */
    @Override
    public void up(Long spuId) {
        // 1.查出当前spuId对应的所有sku信息，品牌的名字
        List<SkuInfoEntity> skus=skuInfoService.getSkuBySpuId(spuId);
        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        // attrs
        // TODO 4.查询当前sku的所有可以被用来检索的规格属性
        List<ProductAttrValueEntity> baseAttrs = attrValueService.baseAttrListForSpu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        //我们需要的id，现在要从baseAttrs中将其过滤出来
        List<Long> searchAttrIds=attrService.selectSearchByAttrIds(attrIds);
        HashSet<Long> idSet=new HashSet<>(searchAttrIds);
        //此时得到search_type==1的属性实体

        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(item -> {
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item, attrs1);
            return attrs1;
        }).collect(Collectors.toList());


        // TODO 1.发送远程调用，库存系统查询是否有库存
        //如果远程调用失败，后期做断流，现在先try-catch
        Map<Long, Boolean> stockMap=null;
        try {
            R r = wareFeignService.getSkusHasStock(skuIdList);

            //（TypeReference——alibaba的包）
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {};
            //做成map映射。一个skuId对应一个是否有库存
            stockMap = r.getData(typeReference).stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId, item -> item.getHasStock()));
        }catch (Exception e){
            log.error("库存服务查询异常：原因{}",e);
        }



        // 2.封装每个sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku -> {
            // 组装需要的数据
            SkuEsModel esModel = new SkuEsModel();
            BeanUtils.copyProperties(sku,esModel);

            /**
             * SkuEsModel和SkuInfoEntity中不一样的要单独处理
             * skuPrice、skuImg、hasStock、hotScore、brandName、brandImg、catalogName、attrs
             *         private Long attrId;
             *         private String attrName;
             *         private String attrValue;
             */

            // skuPrice、skuImg
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());

            // hasStock
            //此举是为了处理，远程服务失败！
            if(finalStockMap ==null){
                esModel.setHasStock(true);
            }else{
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }

            // hotScore
            // TODO 2.热度评分
            esModel.setHotScore(0L);

            // brandName、brandImg、catalogName
            // TODO 3.查询品牌和分类的名字信息
            BrandEntity brand = brandService.getById(esModel.getBrandId());
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());

            CategoryEntity category = categoryService.getById(esModel.getCatalogId());
            esModel.setCatalogName(category.getName());


            //更改esModel中检索属性。根据todo4查询的实体进行赋值
            esModel.setAttrs(attrsList);

            return esModel;
        }).collect(Collectors.toList());

        // TODO 5.将数据发送给es进行保存：gulimall-search
        R r = searchFeignService.productStatusUp(upProducts);
        if(r.getCode()==0){
            //远程调用成功
            // TODO 6. -》代表需要修改上架状态-》已修改
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else{
            //远程调用失败
            //TODO 7、重复调用？接口幂等性
            /**
             * Feign调用流程：
             * 1.构造请求数据，将对象转为json
             * 2.发送请求进行执行（执行成功会解码响应数据）
             * 3.执行请求会有重试机制
             */
        }
    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity byId = skuInfoService.getById(skuId);
        Long spuId = byId.getSpuId();
        SpuInfoEntity spuInfoEntity = this.getById(spuId);
        return spuInfoEntity;
    }

}